ROME (Reuters) - Italian President Giorgio Napolitano on Monday said that whoever wins the upcoming parliamentary election, due in February, must make wide-ranging institutional and economic reforms.

"Five years is enough time for the next government" to undertake a series of needed reforms "during a season of budget rigor," Napolitano said during an address to the highest institutional figures, including Prime Minister Mario Monti.

Napolitano said that he was "bitter and worried" that Italy's political parties had not learned to compromise in the interest of the country even after 13 months of the technocrat Monti government, and that he expected each one to illustrate credible programs ahead of the election.

(Reporting by Steve Scherer)